Home / 2,151.43-3,227.14-690.70

Finding the Fourth Proportional to 2,151.43, 3,227.14 and 690.70

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Solution

The fourth proportional to 2,151.43, 3,227.14 and 690.70 is: 1,036.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.43 : 3,227.14 = 690.70 : x
  2. Step 2: Convert to fraction form
    2,151.43/3,227.14 = 690.70/x
  3. Step 3: Cross multiply
    2,151.43x = 3,227.14 × 690.70
  4. Step 4: Simplify right side
    2,151.43x = 2,228,969.46
  5. Step 5: Solve for x
    x = 2,228,969.46/2,151.43
  6. Step 6: Final answer
    x = 1,036.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.